
<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta charset="utf-8" />
  
  <!-- Licensed under the Apache 2.0 License -->
  <link rel="stylesheet" type="text/css" href="../../../../_static/fonts/open-sans/stylesheet.css" />
  <!-- Licensed under the SIL Open Font License -->
  <link rel="stylesheet" type="text/css" href="../../../../_static/fonts/source-serif-pro/source-serif-pro.css" />
  <link rel="stylesheet" type="text/css" href="../../../../_static/css/bootstrap.min.css" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  
    <title>jmetal.lab.visualization.streaming &#8212; jMetalPy 1.5.3 documentation</title>
    <link rel="stylesheet" href="../../../../_static/guzzle.css" type="text/css" />
    <link rel="stylesheet" href="../../../../_static/pygments.css" type="text/css" />
    <link rel="stylesheet" type="text/css" href="../../../../_static/custom.css" />
    <script type="text/javascript" id="documentation_options" data-url_root="../../../../" src="../../../../_static/documentation_options.js"></script>
    <script type="text/javascript" src="../../../../_static/jquery.js"></script>
    <script type="text/javascript" src="../../../../_static/underscore.js"></script>
    <script type="text/javascript" src="../../../../_static/doctools.js"></script>
    <script type="text/javascript" src="../../../../_static/language_data.js"></script>
    <script crossorigin="anonymous" integrity="sha256-Ae2Vz/4ePdIu6ZyI/5ZGsYnb+m0JlOmKPjt6XZ9JJkA=" type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.4/require.min.js"></script>
    <script async="async" type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/latest.js?config=TeX-AMS-MML_HTMLorMML"></script>
    <script type="text/x-mathjax-config">MathJax.Hub.Config({"tex2jax": {"inlineMath": [["$", "$"], ["\\(", "\\)"]], "processEscapes": true, "ignoreClass": "document", "processClass": "math|output_area"}})</script>
    <link rel="index" title="Index" href="../../../../genindex.html" />
    <link rel="search" title="Search" href="../../../../search.html" />
  
   

  </head><body>
    <div class="related" role="navigation" aria-label="related navigation">
      <h3>Navigation</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../../../../genindex.html" title="General Index"
             accesskey="I">index</a></li>
        <li class="right" >
          <a href="../../../../py-modindex.html" title="Python Module Index"
             >modules</a> |</li>
        <li class="nav-item nav-item-0"><a href="../../../../index.html">jMetalPy 1.5.3 documentation</a> &#187;</li>
          <li class="nav-item nav-item-1"><a href="../../../index.html" accesskey="U">Module code</a> &#187;</li> 
      </ul>
    </div>
    <div class="container-wrapper">

      <div id="mobile-toggle">
        <a href="#"><span class="glyphicon glyphicon-align-justify" aria-hidden="true"></span></a>
      </div>
  <div id="left-column">
    <div class="sphinxsidebar"><a href="
    ../../../../index.html" class="text-logo">
    <img src="_static/jmetalpy.png" class="img-fluid" alt="jMetalPy 1.5.3 documentation">
    <br>
</a>

<div class="sidebar-block">
  <div class="sidebar-wrapper">
    Python version of the jMetal framework
  </div>
</div>
<div class="sidebar-block">
  <div class="sidebar-wrapper">
    <h2>Table Of Contents</h2>
  </div>
  <div class="sidebar-toc">
    
    
      <ul>
<li class="toctree-l1"><a class="reference internal" href="../../../../tutorials.html">Getting started</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../multiobjective.algorithms.html">Multi-objective algorithms</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../singleobjective.algorithms.html">Single-objective algorithms</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../operators.html">Operators</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../problems.html">Problems</a></li>
</ul>

    
  </div>
</div>
<div class="sidebar-block">
  <div class="sidebar-wrapper">
    <div id="main-search">
      <form class="form-inline" action="../../../../search.html" method="GET" role="form">
        <div class="input-group">
          <input name="q" type="text" class="form-control" placeholder="Search...">
        </div>
        <input type="hidden" name="check_keywords" value="yes" />
        <input type="hidden" name="area" value="default" />
      </form>
    </div>
  </div>
</div>
      
    </div>
  </div>
        <div id="right-column">
          
          <nav aria-label="breadcrumb">
            <ol class="breadcrumb">
              <li class="breadcrumb-item"><a href="../../../../index.html">Docs</a></li>
              
              <li class="breadcrumb-item"><a href="../../../index.html">Module code</a></li>
              
              <li class="breadcrumb-item">jmetal.lab.visualization.streaming</li>
            </ol>
          </nav>
          
          <div class="document clearer body">
            
  <h1>Source code for jmetal.lab.visualization.streaming</h1><div class="highlight"><pre>
<span></span><span class="kn">import</span> <span class="nn">logging</span>
<span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">TypeVar</span><span class="p">,</span> <span class="n">List</span>

<span class="kn">import</span> <span class="nn">matplotlib</span>
<span class="kn">from</span> <span class="nn">matplotlib</span> <span class="kn">import</span> <span class="n">pyplot</span> <span class="k">as</span> <span class="n">plt</span>
<span class="kn">from</span> <span class="nn">mpl_toolkits.mplot3d</span> <span class="kn">import</span> <span class="n">Axes3D</span>

<span class="kn">from</span> <span class="nn">jmetal.lab.visualization.plotting</span> <span class="kn">import</span> <span class="n">Plot</span>

<span class="n">LOGGER</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="s1">&#39;jmetal&#39;</span><span class="p">)</span>

<span class="n">S</span> <span class="o">=</span> <span class="n">TypeVar</span><span class="p">(</span><span class="s1">&#39;S&#39;</span><span class="p">)</span>

<span class="sd">&quot;&quot;&quot;</span>
<span class="sd">.. module:: streaming</span>
<span class="sd">   :platform: Unix, Windows</span>
<span class="sd">   :synopsis: Classes for plotting solutions in real-time.</span>

<span class="sd">.. moduleauthor:: Antonio Benítez-Hidalgo &lt;antonio.b@uma.es&gt;</span>
<span class="sd">&quot;&quot;&quot;</span>


<div class="viewcode-block" id="StreamingPlot"><a class="viewcode-back" href="../../../../tutorials/visualization.html#jmetal.lab.visualization.streaming.StreamingPlot">[docs]</a><span class="k">class</span> <span class="nc">StreamingPlot</span><span class="p">:</span>

    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span>
                 <span class="n">plot_title</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s1">&#39;Pareto front approximation&#39;</span><span class="p">,</span>
                 <span class="n">reference_front</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">S</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
                 <span class="n">reference_point</span><span class="p">:</span> <span class="nb">list</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
                 <span class="n">axis_labels</span><span class="p">:</span> <span class="nb">list</span> <span class="o">=</span> <span class="kc">None</span><span class="p">):</span>
        <span class="sd">&quot;&quot;&quot;</span>
<span class="sd">        :param plot_title: Title of the graph.</span>
<span class="sd">        :param axis_labels: List of axis labels.</span>
<span class="sd">        :param reference_point: Reference point (e.g., [0.4, 1.2]).</span>
<span class="sd">        :param reference_front: Reference Pareto front (if any) as solutions.</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">plot_title</span> <span class="o">=</span> <span class="n">plot_title</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">axis_labels</span> <span class="o">=</span> <span class="n">axis_labels</span>

        <span class="k">if</span> <span class="n">reference_point</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">reference_point</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nb">list</span><span class="p">):</span>
            <span class="n">reference_point</span> <span class="o">=</span> <span class="p">[</span><span class="n">reference_point</span><span class="p">]</span>

        <span class="bp">self</span><span class="o">.</span><span class="n">reference_point</span> <span class="o">=</span> <span class="n">reference_point</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">reference_front</span> <span class="o">=</span> <span class="n">reference_front</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">dimension</span> <span class="o">=</span> <span class="kc">None</span>

        <span class="kn">import</span> <span class="nn">warnings</span>
        <span class="n">warnings</span><span class="o">.</span><span class="n">filterwarnings</span><span class="p">(</span><span class="s2">&quot;ignore&quot;</span><span class="p">,</span> <span class="s2">&quot;.*GUI is implemented.*&quot;</span><span class="p">)</span>

        <span class="bp">self</span><span class="o">.</span><span class="n">fig</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">ax</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">subplots</span><span class="p">()</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">sc</span> <span class="o">=</span> <span class="kc">None</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">axis</span> <span class="o">=</span> <span class="kc">None</span>

<div class="viewcode-block" id="StreamingPlot.plot"><a class="viewcode-back" href="../../../../tutorials/visualization.html#jmetal.lab.visualization.streaming.StreamingPlot.plot">[docs]</a>    <span class="k">def</span> <span class="nf">plot</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">front</span><span class="p">):</span>
        <span class="c1"># Get data</span>
        <span class="n">points</span><span class="p">,</span> <span class="n">dimension</span> <span class="o">=</span> <span class="n">Plot</span><span class="o">.</span><span class="n">get_points</span><span class="p">(</span><span class="n">front</span><span class="p">)</span>

        <span class="c1"># Create an empty figure</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">create_layout</span><span class="p">(</span><span class="n">dimension</span><span class="p">)</span>

        <span class="c1"># If any reference point, plot</span>
        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">reference_point</span><span class="p">:</span>
            <span class="k">for</span> <span class="n">point</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">reference_point</span><span class="p">:</span>
                <span class="bp">self</span><span class="o">.</span><span class="n">scp</span><span class="p">,</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="o">*</span><span class="p">[[</span><span class="n">p</span><span class="p">]</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">point</span><span class="p">],</span> <span class="n">c</span><span class="o">=</span><span class="s1">&#39;r&#39;</span><span class="p">,</span> <span class="n">ls</span><span class="o">=</span><span class="s1">&#39;None&#39;</span><span class="p">,</span> <span class="n">marker</span><span class="o">=</span><span class="s1">&#39;*&#39;</span><span class="p">,</span> <span class="n">markersize</span><span class="o">=</span><span class="mi">3</span><span class="p">)</span>

        <span class="c1"># If any reference front, plot</span>
        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">reference_front</span><span class="p">:</span>
            <span class="n">rpoints</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="n">Plot</span><span class="o">.</span><span class="n">get_points</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">reference_front</span><span class="p">)</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">scf</span><span class="p">,</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="o">*</span><span class="p">[</span><span class="n">rpoints</span><span class="p">[</span><span class="n">column</span><span class="p">]</span><span class="o">.</span><span class="n">tolist</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">rpoints</span><span class="o">.</span><span class="n">columns</span><span class="o">.</span><span class="n">values</span><span class="p">],</span>
                                     <span class="n">c</span><span class="o">=</span><span class="s1">&#39;k&#39;</span><span class="p">,</span> <span class="n">ls</span><span class="o">=</span><span class="s1">&#39;None&#39;</span><span class="p">,</span> <span class="n">marker</span><span class="o">=</span><span class="s1">&#39;*&#39;</span><span class="p">,</span> <span class="n">markersize</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>

        <span class="c1"># Plot data</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">sc</span><span class="p">,</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="o">*</span><span class="p">[</span><span class="n">points</span><span class="p">[</span><span class="n">column</span><span class="p">]</span><span class="o">.</span><span class="n">tolist</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">points</span><span class="o">.</span><span class="n">columns</span><span class="o">.</span><span class="n">values</span><span class="p">],</span>
                                <span class="n">ls</span><span class="o">=</span><span class="s1">&#39;None&#39;</span><span class="p">,</span> <span class="n">marker</span><span class="o">=</span><span class="s1">&#39;o&#39;</span><span class="p">,</span> <span class="n">markersize</span><span class="o">=</span><span class="mi">4</span><span class="p">)</span>

        <span class="c1"># Show plot</span>
        <span class="n">plt</span><span class="o">.</span><span class="n">show</span><span class="p">(</span><span class="n">block</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span></div>

<div class="viewcode-block" id="StreamingPlot.update"><a class="viewcode-back" href="../../../../tutorials/visualization.html#jmetal.lab.visualization.streaming.StreamingPlot.update">[docs]</a>    <span class="k">def</span> <span class="nf">update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">front</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">S</span><span class="p">],</span> <span class="n">reference_point</span><span class="p">:</span> <span class="nb">list</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">sc</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
            <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s1">&#39;Figure is none&#39;</span><span class="p">)</span>

        <span class="n">points</span><span class="p">,</span> <span class="n">dimension</span> <span class="o">=</span> <span class="n">Plot</span><span class="o">.</span><span class="n">get_points</span><span class="p">(</span><span class="n">front</span><span class="p">)</span>

        <span class="c1"># Replace with new points</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">sc</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="n">points</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">points</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>

        <span class="k">if</span> <span class="n">dimension</span> <span class="o">==</span> <span class="mi">3</span><span class="p">:</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">sc</span><span class="o">.</span><span class="n">set_3d_properties</span><span class="p">(</span><span class="n">points</span><span class="p">[</span><span class="mi">2</span><span class="p">])</span>

        <span class="c1"># If any new reference point, plot</span>
        <span class="k">if</span> <span class="n">reference_point</span><span class="p">:</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">scp</span><span class="o">.</span><span class="n">set_data</span><span class="p">([</span><span class="n">p</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">reference_point</span><span class="p">],</span> <span class="p">[</span><span class="n">p</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">reference_point</span><span class="p">])</span>

        <span class="c1"># Re-align the axis</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">relim</span><span class="p">()</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">autoscale_view</span><span class="p">(</span><span class="kc">True</span><span class="p">,</span> <span class="kc">True</span><span class="p">,</span> <span class="kc">True</span><span class="p">)</span>

        <span class="k">try</span><span class="p">:</span>
            <span class="c1"># self.fig.canvas.draw()</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">fig</span><span class="o">.</span><span class="n">canvas</span><span class="o">.</span><span class="n">flush_events</span><span class="p">()</span>
        <span class="k">except</span> <span class="ne">KeyboardInterrupt</span><span class="p">:</span>
            <span class="k">pass</span>

        <span class="n">pause</span><span class="p">(</span><span class="mf">0.01</span><span class="p">)</span></div>

<div class="viewcode-block" id="StreamingPlot.create_layout"><a class="viewcode-back" href="../../../../tutorials/visualization.html#jmetal.lab.visualization.streaming.StreamingPlot.create_layout">[docs]</a>    <span class="k">def</span> <span class="nf">create_layout</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dimension</span><span class="p">:</span> <span class="nb">int</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">fig</span><span class="o">.</span><span class="n">canvas</span><span class="o">.</span><span class="n">set_window_title</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">plot_title</span><span class="p">)</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">fig</span><span class="o">.</span><span class="n">suptitle</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">plot_title</span><span class="p">,</span> <span class="n">fontsize</span><span class="o">=</span><span class="mi">16</span><span class="p">)</span>

        <span class="k">if</span> <span class="n">dimension</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span>
            <span class="c1"># Stylize axis</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">spines</span><span class="p">[</span><span class="s1">&#39;top&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">set_visible</span><span class="p">(</span><span class="kc">False</span><span class="p">)</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">spines</span><span class="p">[</span><span class="s1">&#39;right&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">set_visible</span><span class="p">(</span><span class="kc">False</span><span class="p">)</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">get_xaxis</span><span class="p">()</span><span class="o">.</span><span class="n">tick_bottom</span><span class="p">()</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">get_yaxis</span><span class="p">()</span><span class="o">.</span><span class="n">tick_left</span><span class="p">()</span>
        <span class="k">elif</span> <span class="n">dimension</span> <span class="o">==</span> <span class="mi">3</span><span class="p">:</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">ax</span> <span class="o">=</span> <span class="n">Axes3D</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">fig</span><span class="p">)</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">autoscale</span><span class="p">(</span><span class="n">enable</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">axis</span><span class="o">=</span><span class="s1">&#39;both&#39;</span><span class="p">)</span>
        <span class="k">else</span><span class="p">:</span>
            <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s1">&#39;Dimension must be either 2 or 3&#39;</span><span class="p">)</span>

        <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">set_autoscale_on</span><span class="p">(</span><span class="kc">True</span><span class="p">)</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">autoscale_view</span><span class="p">(</span><span class="kc">True</span><span class="p">,</span> <span class="kc">True</span><span class="p">,</span> <span class="kc">True</span><span class="p">)</span>

        <span class="c1"># Style options</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">grid</span><span class="p">(</span><span class="n">color</span><span class="o">=</span><span class="s1">&#39;#f0f0f5&#39;</span><span class="p">,</span> <span class="n">linestyle</span><span class="o">=</span><span class="s1">&#39;-&#39;</span><span class="p">,</span> <span class="n">linewidth</span><span class="o">=</span><span class="mf">0.5</span><span class="p">,</span> <span class="n">alpha</span><span class="o">=</span><span class="mf">0.5</span><span class="p">)</span></div></div>


<span class="k">def</span> <span class="nf">pause</span><span class="p">(</span><span class="n">interval</span><span class="p">:</span> <span class="nb">float</span><span class="p">):</span>
    <span class="n">backend</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">rcParams</span><span class="p">[</span><span class="s1">&#39;backend&#39;</span><span class="p">]</span>

    <span class="k">if</span> <span class="n">backend</span> <span class="ow">in</span> <span class="n">matplotlib</span><span class="o">.</span><span class="n">rcsetup</span><span class="o">.</span><span class="n">interactive_bk</span><span class="p">:</span>
        <span class="n">figManager</span> <span class="o">=</span> <span class="n">matplotlib</span><span class="o">.</span><span class="n">_pylab_helpers</span><span class="o">.</span><span class="n">Gcf</span><span class="o">.</span><span class="n">get_active</span><span class="p">()</span>
        <span class="k">if</span> <span class="n">figManager</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
            <span class="n">canvas</span> <span class="o">=</span> <span class="n">figManager</span><span class="o">.</span><span class="n">canvas</span>
            <span class="k">if</span> <span class="n">canvas</span><span class="o">.</span><span class="n">figure</span><span class="o">.</span><span class="n">stale</span><span class="p">:</span>
                <span class="n">canvas</span><span class="o">.</span><span class="n">draw</span><span class="p">()</span>
            <span class="n">canvas</span><span class="o">.</span><span class="n">start_event_loop</span><span class="p">(</span><span class="n">interval</span><span class="p">)</span>
            <span class="k">return</span>
</pre></div>

          </div>
            
        </div>
        <div class="clearfix"></div>
    </div>
    <div class="related" role="navigation" aria-label="related navigation">
      <h3>Navigation</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../../../../genindex.html" title="General Index"
             >index</a></li>
        <li class="right" >
          <a href="../../../../py-modindex.html" title="Python Module Index"
             >modules</a> |</li>
        <li class="nav-item nav-item-0"><a href="../../../../index.html">jMetalPy 1.5.3 documentation</a> &#187;</li>
          <li class="nav-item nav-item-1"><a href="../../../index.html" >Module code</a> &#187;</li> 
      </ul>
    </div>
<script type="text/javascript">
  $("#mobile-toggle a").click(function () {
    $("#left-column").toggle();
  });
</script>
<script type="text/javascript" src="../../../../_static/js/bootstrap.js"></script>
  <div class="footer">
    &copy; Copyright 2019, Antonio Benítez-Hidalgo. Created using <a href="http://sphinx.pocoo.org/">Sphinx</a>.
  </div>
  </body>
</html>